Question 1

All of the following statements about the SmartBeam system are true, EXCEPT:&#10;A)The system uses a digital camera to determine light intensity.&#10;B)The system is capable of detecting movement of oncoming light.&#10;C)The system is capable of distinguishing colors.&#10;D)The AHBM turns off the high-beam relay when oncoming light intensity is 10 LUX or more.

Accepted Answer

D

Question 2

Which of the following is NOT true of automatic headlamp systems?&#10;A)They can turn headlamps on or off .&#10;B)They can control high- and low-beam switching .&#10;C)They are easily diagnosed when defective .&#10;D)They can be adjusted to fit various conditions .

Accepted Answer

Automatic headlamp systems are not easily diagnosed when defective. They typically require specialized equipment and trained technicians to diagnose and repair any issues.

Question 3

Which of the following statements regarding automatic headlight dimming systems is correct?&#10;A)Decreasing the sensitivity control of the automatic headlight dimming system means the headlights will switch to low beams &#160;&#160;when the approaching vehicle is farther away.&#10;B)Increasing the sensitivity control of the automatic headlight dimming system means the headlights will switch to low beams when the approaching vehicle is closer.&#10;C)All of these choices.&#10;D)None of these choices.

Accepted Answer

Both statements A and B are incorrect. Decreasing sensitivity means the system is less responsive, so it would switch to low beams when the vehicle is closer, not farther. Increasing sensitivity means the system is more responsive, so it would switch to low beams when the vehicle is farther away, not closer.

Question 4

The most likely cause of the automatic headlights failing to activate in low ambient light conditions is:&#10;A) A faulty ignition switch.&#10;B) A faulty photocell.&#10;C) Burned-out headlight elements.&#10;D) Faulty headlight switch.

Accepted Answer

The automatic headlights are activated by a photocell that senses the ambient light conditions. If the photocell is faulty or damaged, it may fail to sense the low light conditions and activate the headlights. The other options such as faulty ignition switch, burned-out headlight elements, or faulty headlight switch would not affect the automatic activation of headlights in low light conditions.

Question 5

In the SmartBeam system, the headlight intensity is based on which of the following:&#10;A) Movement of the light.&#10;B) Intensity of the light.&#10;C) Location of the light.&#10;D) All of these choices.

Accepted Answer

The SmartBeam system uses all three factors to determine the headlight intensity. It tracks the movement of the light to adjust the beam direction, measures the intensity of the light to determine the appropriate brightness, and uses the location of the light to avoid blinding oncoming drivers or drivers in front of the vehicle.

Question 6

Which statement is the most correct?&#10;A) Lamp outage modules can use voltage drop to determine circuit operation.&#10;B) HSDs can only be used to detect opens in activated circuits.&#10;C) Low-side driver controlled lamps cannot determine lamp outage conditions.&#10;D) All of these choices.

Accepted Answer

Lamp outage modules typically use voltage drop to determine if a lamp is operating, as a functioning lamp will have a lower voltage drop than an open circuit. HSDs (high-side drivers) can also detect shorts, overloads, and over-temperature conditions in addition to opens, but cannot detect faults in circuits that are not activated. Low-side driver controlled lamps do not have the ability to detect their own outage conditions. Therefore, only statement A is the most correct, while statements B and C contain inaccuracies.

Question 7

The headlights work in the manual position but do not turn on in the AUTO position. What is the most likely cause?&#10;A)A bad headlight ground.&#10;B) A faulty photocell assembly.&#10;C) A faulty headlight relay.&#10;D) A bad headlight relay ground connection.

Accepted Answer

If the headlights work in the manual position but not in the AUTO position, it is likely that the photocell assembly, which detects light and triggers the headlights to turn on, is faulty. A faulty ground or headlight relay may cause the headlights to not work at all, rather than just in the AUTO position.

Question 8

Which statement about fiber optics is correct?&#10;A)Fiber optics is the transmission of light through several plastic strands that are sheathed by a polymer.&#10;B)Fiber optics is used only for exterior lighting.&#10;C)Fiber optics can only be used in applications where the conduit can be laid straight.&#10;D) Fiber optics can be used to transmit electricity.

Accepted Answer

Fiber optics is the transmission of light through several glass or plastic strands that are sheathed by a polymer. It is used for high-speed data transmission and communication. It is not used for transmitting electricity and can be bent and shaped to fit different applications.

Question 9

The purpose of the headlight leveling system is to:&#10;A) Reduce the need to align the light beams.&#10;B)To allow the driver to raise or lower the light beams as vehicle loads change.&#10;C) To allow the driver to raise or lower the light beams as the vehicle ascends and descends hills.&#10;D) All of these choices.

Accepted Answer

The answer of The purpose of the headlight leveling system...

Question 10

An indicator that uses fiber optics is not functioning. This can be caused by:&#10;A) A bent fiber-optics cable.&#10;B) A faulty light source.&#10;C) Electromagnetic interference.&#10;D) None of these choices.

Accepted Answer

The answer of An indicator that uses fiber optics is...

Question 11

A lamp outage module alerts the driver when a bulb for which system is out?&#10;A) Headlights .&#10;B) Taillights .&#10;C) Stoplights .&#10;D) All of these choices .

Accepted Answer

The answer of A lamp outage module alerts the driver...

Deck 12: Advanced Lighting Circuits Advanced Lighting Systems Diagnosis and Service